Cooling accumulator cell



June 1 1926.

, 0. SCHEPP COOLING ACCUMULATOR CELL Filed Sept. 11 1925 Patented June 1, 1926.

UNITED STA orro 'scnnrr, or 'roxro, "JAPAN.

COOLING ACCUMULATOR CELL.

Application fled September 11, 19 25, Serial- No. 55,838, and in-Getmany .l'une 18, 1923.

I The. invention relates accumulators.

In order to constantly maintain the required readiness of function and to increase the life of accumulator cells which are frequently charged or are arranged in warm fooms, it is necessary to cool the electroyter In a known cooling device of this char- .acter a cooling coil is arranged on the bottom of the accumulator box and cold water is made to flow through this .coil. This kind of cooling, however, has the drawback that the electrolyte is cooled, it is true, in its lower portion but undergoes but an insufficient cooling in its upper layers.

The invention has for its object .to obviate to cells for electric this drawback and attains this by the cool above theaccumulaing coil beingsituated tor plates.

On the drawing is illustrated an embodiment of the subject-matter of the invention by way of example, 'FigY-l showing a vertical section through the upper portion of the accumulator cell, Fig. '2 showing a top view of the cooling coil.

a denotes the hard rubber box of the cell which is closed by the hard rubber cover I) and tightened by fillingoutthe groove 0'. The box a has suspended in it, in the usual manner, the jiositive and negative plates'd and e, respectively, these plates being correspondingly connected by pole strips f and g and separated from each other by intermediate hard rubber plates 10. The current is delivered at the poles h and 2'. The intermediate plates are recessed so as to permit.

a cooling coil l to be put in said recesses. The'cooling coil Z is held together b means of wooden strips m impregnated wit paraffin and having bearing surfaces for the coil,

and by rubber rings n. Connecting tubes through which the cooling liquid is supplied By arranging the cooling coil abovethe plates of the accumulator the result is obtained that a permanent circulation will take place within the electrolyte, the cooled layers of it sinkin to the bottom of the cell and causing ot er portions of it to rise and to be exposed to the action of the cooling coil. A further advantage of the described cooling device resides in the fact that the cooling coil may be easily exchanged when damaged.

The described cooling device may of course also be applied to open accumulator cells.

I claim:

1. An accumulator cell having a box, elec trolyte in said box, accumulator plates hanging in said electrolyte, a cooling coil situated within. said electrolyte above said plates, and means for supplying a cooling medium to said coil.

2. An accumulator cell having a box, elec trolyte in said box, accumulator plates hanging in said electrol te, insulating plates arranged between sald'plates, a cooling coil situated within said electrolyte above said accumulator plates and resting on said insulating plates, and means for supplying a cooling medium to said coil.

3. An accumulator cell having a box, electrolyte in said box, accumulator plates hanging in said electrolyte, insulating plates ar-" ranged between said plates, recesses in said insulatin plates, a ,cooling coil situated Within sald electrolyte above said'accumulator plates and resting in said recesses of said insulating plates, and means for supplying I a cooling medium to said coil. 4

- OTTO SCHEPP. 

